Ten years after the Harmon family die in the Murder House, a new family move in. Dallas Hassinger, his wife Madeleine and their sixteen-year-old twins Artemis and Isaac have moved to California from North Dakota due to the twins' affinity for performance; they have both been accepted into a prestigious performing arts school.
For the past decade, Violet has ignored Tate as much as possible, and Tate has refused to give up on her. Constance, who has devoted the past decade to caring for Tate and Vivien's son Michael, encourages her son to move on, but Tate remains hopelessly - and violently - devoted to Violet. When Violet befriends Artemis and seems to develop a romantic interest in Isaac, Tate recruits some of the other ghosts to drive the Hassinger family from the Murder House.
Meanwhile, Michael Langdon is growing older and stronger. While he physically looks like a normal ten-year-old child, he has the mentality of an intelligent adult and physical strength far beyond any human capability. When Constance finds the remains of neighbourhood children in Michael's bedroom, she resigns herself to locking the child in her basement, in order to keep herself and everyone else safe.
Tate Langdon was a boy that had issues, sure. But he also had a little sister who he had to protect for most of his life, which caused him to miss out on a normal childhood. And yes, she's dead too. When the new family moves into the Murder House and another girl comes into Tate's life, jealousy gets the better of Rosie and because of her, everything between Tate & Violet changes.